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Message*:
Arguments:	device:: Name of the device on which an erroneous I/O was detected rw:: Type of the I/O. 0=Read/1=Write want:: Size of the requested I/O（in sectors） limit:: Size of the target file(in sectors）
Explanation*:	An unreasonable I/O was detected, which attempted to access beyond the end of the target block type device(e.g. hard disk, floppy disk, CD-ROM). The name of the device is displayed with the related information as described in the Arguments section. In this case, the I/O should be terminated in error. It's possible that the file area information recognized by the file system clashed with the information delivered by the associated device driver.
Category*:	(default:priorityと同じ)
Action:	Since something may be wrong with the file system for the device shown in the message, it's recommended to use fsck to check and repair the file system.
Misc:	The following message is also displayed before this message: [[BR]] attempt to access beyond end of device [[BR]] Refer [http://ossmpedia.org/messages/linux/2.6.9-34.EL/9278.en drivers/block/ll_rw_blk.c #2552]for the detail.
Example:	md3: rw=0, want=4913837584, limit=1465175040

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